An eco-friendly procedure for synthesis of 2-substituted-3-(phenylamino)-dihydroquinazolin-4(1H)-ones by three-component reactions, with bentonite as a low cost and reusable catalyst under ultra sonic irradiation, is described. The novel method offers several advantages, such as high yields, short reaction time, environmentally friendly reaction media, and recyclable catalyst. All the synthesized
Moreover, it was used as catalyst for the first time in the modified Niementowski reaction to investigate its catalytic activity. According to the high yield of quinazolinone products obtained within short reaction times, it was found that SrFe12O19 can be used as an effective and green nanocatalyst in organic reactions. The nanomagnetic catalyst can be easily separated from the reaction mixture using an external
纳米磁性SrFe 12 O 19是通过简单的溶胶-凝胶自燃烧合成的,然后通过FT-IR,XRD,EDXA,VSM,BET和SEM图像进行表征。此外,在改性Niementowski反应中首次将其用作催化剂以研究其催化活性。根据在短反应时间内获得的喹唑啉酮产物的高产率,发现SrFe 12 O 19可以用作有机反应中的有效的绿色纳米催化剂。使用外部磁体可以容易地将纳米磁性催化剂与反应混合物分离。